diff --git a/README.md b/README.md
index 472ec9f..3d3bd73 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,3 @@
-# 抗议中兴公司拿别人的开源软件XXL-JOB，申请专利的行为，这样的流氓、小偷公司，请大家以后拒绝这种公司提供的一切产品，维护开源产业。
 
 # port-forward
 Go语言开发的端口转发工具  for port data forward
diff --git a/forward-core/README.md b/forward-core/README.md
index e3a8abc..0f3b190 100644
--- a/forward-core/README.md
+++ b/forward-core/README.md
@@ -1,2 +1,2 @@
-# No Commit
+# 公共类库
 
diff --git a/forward-core/common/NetCommon.go b/forward-core/common/NetCommon.go
new file mode 100644
index 0000000..278194f
--- /dev/null
+++ b/forward-core/common/NetCommon.go
@@ -0,0 +1,109 @@
+package common
+
+import (
+	"bufio"
+	"encoding/binary"
+	"errors"
+	"net"
+
+	"github.com/astaxie/beego/logs"
+)
+
+type NetCommon struct {
+}
+
+type ReadCallBack func(conn net.Conn, id int, cmd byte, arg []byte)
+
+const (
+	MagicAuthFail = byte(iota)
+	DoAuth
+	MagicRefused
+	AgentListenerOpen
+	AgentConnOpen
+	AgentConnClose
+	MsgToMagic
+	MsgToAgent
+)
+
+func (_self *NetCommon) ReadConn(conn net.Conn, callback ReadCallBack) {
+	scanner := bufio.NewScanner(conn)
+	scanner.Split(func(data []byte, atEOF bool) (adv int, token []byte, err error) {
+		return _self.Split(data, atEOF, conn, callback)
+	})
+	for scanner.Scan() {
+	}
+	if scanner.Err() != nil {
+		logs.Error(scanner.Err())
+	}
+}
+
+func (_self *NetCommon) Split(data []byte, atEOF bool, conn net.Conn, callback ReadCallBack) (adv int, token []byte, err error) {
+	l := len(data)
+	if l < 6 {
+		return 0, nil, nil
+	}
+	if l > 100000 {
+		conn.Close()
+		return 0, nil, errors.New("max data")
+	}
+	var id int
+	var cmd byte
+	id = int(int32(data[0]) | int32(data[1])<<8 | int32(data[2])<<16 | int32(data[3])<<24)
+	cmd = data[4]
+	isShort := data[5]
+	var payload []byte
+	var offset int
+	if isShort == 1 {
+		offset = 6
+	} else {
+		if l < 10 {
+			return 0, nil, nil
+		}
+		ls := binary.LittleEndian.Uint32(data[6:])
+		tail := l - 10
+		if tail < int(ls) {
+			return 0, nil, nil
+		}
+		payload = data[10 : 10+ls]
+		offset = 10 + int(ls)
+	}
+
+	callback(conn, id, cmd, payload)
+
+	return offset, []byte{}, nil
+}
+
+func (_self *NetCommon) WriteConn(conn net.Conn, id int, cmd byte, payload []byte) error {
+	if conn == nil {
+		return nil
+	}
+	l := len(payload)
+	var buf []byte
+	var size int
+	if l > 0 {
+		size = 10 + l
+		//4+1+1+4 id cmd isShort
+		buf = make([]byte, size)
+	} else {
+		size = 6
+		//4+1+1 id cmd isShort
+		buf = make([]byte, size)
+	}
+	buf[0] = byte(id)
+	buf[1] = byte(id >> 8)
+	buf[2] = byte(id >> 16)
+	buf[3] = byte(id >> 24)
+	buf[4] = cmd
+	if l > 0 {
+		buf[5] = 0
+		binary.LittleEndian.PutUint32(buf[6:], uint32(l))
+		copy(buf[10:], []byte(payload))
+	} else {
+		buf[5] = 1
+	}
+	_, err := conn.Write(buf[:size])
+	if err != nil {
+		logs.Error("conn.Write error:", err)
+	}
+	return err
+}
diff --git a/net-agent/README.md b/net-agent/README.md
index e3a8abc..6b0ca0b 100644
--- a/net-agent/README.md
+++ b/net-agent/README.md
@@ -1,2 +1,3 @@
 # No Commit
 
+抱歉，net-agent暂不开源，请关注后续更新